@book{OstermannWolfOstermann2005,
  author    = {Ostermann, R. and Wolf-Ostermann, K.},
  title     = {Statistik in Sozialer Arbeit und Pflege},
  edition   = {3. Auflage},
  publisher = {Oldenbourg},
  address   = {M{\"u}nchen},
  year      = {2005},
  language  = {de}
}